Check-lists
* List of countries might not be complete
Links and literature
[1] Kříž J. (2008): A new bivalve community from the lower Ludlow of the Prague Basin (Perunica, Bohemia), Bulletin of Geosciences 83(3), 237–280 [as Cardiola signata Barrande, 1881]
Kříž J. (2008): A new bivalve community from the lower Ludlow of the Prague Basin (Perunica, Bohemia), Bulletin of Geosciences 83(3), 237–280 [as Cardiola signata Barrande, 1881]